package ch1;

import com.rabbitmq.client.*;

import java.io.IOException;
import java.util.concurrent.TimeUnit;

/**
 * @Description 代码清单1-2 消费者代码 p.12
 * @Author p.ww
 * @Date 2020/5/29
 **/
public class RabbitConsumer {

    private static final String QUEUE_NAME = "queue_demo";
    private static final String IP_ADDRESS = "127.0.0.1";
    private static final int PORT = 5672;

    public static void main(String[] args) throws Exception {
        Address[] addresses = new Address[]{
                new Address(IP_ADDRESS, PORT)
        };

        ConnectionFactory factory = new ConnectionFactory();
        factory.setUsername("wrs");
        factory.setPassword("wrs123");

        Connection connection = factory.newConnection();
        final Channel channel = connection.createChannel(); //创建信道

        //不推荐使用QueueingConsumer,因为有隐患,在RabbitMQ Java客户端4.0版本开始将QueueingConsumer标记为@Deprecated
        Consumer consumer = new DefaultConsumer(channel){
            @Override
            public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException {
                System.out.println("recv message: " + new String(body));
                try {
                    TimeUnit.SECONDS.sleep(1);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                channel.basicAck(envelope.getDeliveryTag(), false);
            }
        };
        channel.basicConsume(QUEUE_NAME, consumer);
        //等待回调函数执行完毕之后，关闭资源
        TimeUnit.SECONDS.sleep(5);
        channel.close();
        connection.close();
    }

}
